Microbial community structure of different electrode materials in constructed wetland incorporating microbial fuel cell

作者：Wang, Junfeng; Song, Xinshan^*; Wang, Yuhui; Abayneh, Befkadu; Ding, Yi; Yan, Denghua; Bai, Junhong

来源：Bioresource Technology, 2016, 221: 697-702.

DOI：10.1016/j.biortech.2016.09.116

• Microbial fuel cell
• Constructed wetland
• Microbial community composition
• Electrode material
• Electrochemically active bacteria

The microbial fuel cell coupled with constructed wetland (CW-MFC) microcosms were operated under fed-batch mode for evaluating the effect of electrode materials on bioelectricity generation and microbial community composition. Experimental results indicated that the bioenergy output in CW-MFC increased with the substrate concentration; maximum average voltage (177 mV) was observed in CW-MFC with carbon fiber felt (CFF). In addition, the four different materials resulted in the formation of significantly different microbial community distribution around the anode electrode. The relative abundance of Proteobacteria in CFF and foamed nickel (FN) was significantly higher than that in stainless steel mesh (SSM) and graphite rod (GR) samples. Notably, the findings indicate that CW-MFC utilizing FN anode electrode could apparently improve relative abundance of Dechloromonas, which has been regarded as a denitrifying and phosphate accumulating microorganism.

• 出版日期2016-12
• 单位东华大学; 中国水利水电科学研究院; 北京师范大学